pinion-pdf 1.0.0: rebuild a CSV from a spreadsheet printed to PDF

Derives page layout from the file itself (batch size, column edges, row
grid, heading font), places text by start-x to survive cell overflow,
detects blackout redactions including filled-path bars and
single-character bars, and self-verifies via Excel's printed row-number
chain. Output byte-identical to four independently written
implementations across a 1,048,576-row reference file.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012bQ28wRBiQYcSR9FzV9U7c

pyproject.toml

@@ -0,0 +1,19 @@
+[build-system]
+requires = ["setuptools>=61"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "pinion-pdf"
+version = "1.0.0"
+description = "Turn a spreadsheet that was printed to PDF back into a CSV, and prove the conversion is right."
+readme = "README.md"
+requires-python = ">=3.9"
+license = { text = "MIT" }
+authors = [{ name = "David Adams" }]
+dependencies = ["pymupdf"]
+
+[project.scripts]
+pinion = "pinion.cli:main"
+
+[tool.setuptools]
+packages = ["pinion"]